Apparatus for facilitating the interior coating of shells.



C. ,Cr ZABRISKIE.

APPARATUS FOR FACILITATING THE INTERIOR COATING 0F SHELLS. APPLICATION FILED ms. 12. 1912.

Patented. July 3, 1917'.-

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' neck portion thereof, which at its inner end t0 tight seal. formed of "a series of ion omnnns c. zannrsnrn,

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menses.

Application filed February To allwkmn z'tmay concern:

Be 1t known that 1, CHARLES C. ZABRrsKm,

a citizen of the United States of America,

' paratus for Facilitating the Interior Coating' of Shells, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to the manufacture of explosive shells, and has particular reference to the means employed for varnishing or otherwise coating the interior of the shells without applying said coating to the threaded neck. In the present state of the art it is usual' to apply the varnish by pouring a suitable quantity into the interior of the shell, flowing it around the walls and finally drain' the surplus quantity out through the nec As before stated, the neck of the shell is threaded and it. has been found extremely difiicult to revent the varnish from entering the three s,'so that a subsequent operation is necessary for clearing the threads. This-difiicultyl have overcome by providing a protecting bushing having a sealing neck and excluding all of the varnish from the threadedportion thereof.

In the drawings:

Figure .l is a section showing my a pawratus in the act of engagement with a s ell;

Fig. 2 is a similar, vlew with the protecting bushing in full engagement;

Fig. 3 is a new similar to Fig. 2 a modification. 1 1

A is the hollow shell and B is the threaded w ng is usually provided with an annular recess .C. -M improvement comprises a liquidproof ushing D which is insertible within the neck and at its inner end is provided with a head or gasket E-ada ted to engage the annular recess 0 and orm afli ui Preferably the bushing is rubber or other elastic ili uidproof materiah'the bead E being forms integral therewith. To hold this member inosition. it is placed upon a collapsible sleeve preferably formed of metal and having tudinal slits G for renderin the same co apsible. There is also promember vi ed an inner non-collapsible sleeve member H, which when telescoped within the F will expand the same and. force Specification of Letters Patent.

connection with the inner end of the.

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0F DETROIT, MICHIGAN.

a Patented July 3, rear 12, 1917. Serial to. 148,195.

the-bead or gasket E into sealin contact with the recess C. The members and H fare preferably provided with lateral flanges I and J at their outer ends, which bear against the outer surface ofthe shell and act as stops for limiting the inward movement of the bushing. v

With the construction as the bushing D is mounted upon the collapsible sleeve F and the two members are together inserted within the neck of .the shell, as indicated in Fig. 1. This is readily acdescribed in use,

complished, as boththe bushing and the bead or gasket member E are suficiently contracted in diameter to be inserted without interference with the threads. The innersleeve member H istheninserted and forced inward, which will causethe expansion of the slitted sleeve F and the surrounding elastic bushing, forcing the bead or gasket E into sealing contact with the recess. The liquid varnish is thenoured into the shell and flowed around t e interior surface, 'afte which the shell is placed in inverted pg liquid, is permitted t drain out through the protecting'bushing. [The gasket it] excludes all liquid from access to the threads, while 'v th'e inner end of the slitted sleeve F which projects beyond the sleeve l-l acts as a drainage means forl conducting away anyl liquid that might otherwise accumulate at t e neck.

' To remove the -,;bushing the sleeve ll is first withdrawn, whereupon the resiliency of the bushing D will cause it to automatically contract a :in diameter slittedsleeve h, so that the bead ltd will clear the threads and sleeve may be withdrawn. 5

By use of my improved apparatus as described the necessity of clearing the threads is entirely eliminated and tlns materially lessens thecost of the operation. Withthemodified construction shown in Fig 3, theg'shell is'provided with 'ingshoulderK- below the groove I isof a smaller diameter. than the mner dlam- 'f eter of the threads. With such a construction";ahushingIL may bemused having. a threaded engfiaigement with; v the threads 18, I and a asket 'havinga metallic supporting ring "is placed in the neck and rests upon the shoulder ringN will K so asto form a resilient-compressible be forced'a ainstathe shoulder liqui stight neal, and the gasket M will form a sition and the surplus and to collapse the both bushing and K. With'this construction the the a ro3ect- G which 'ing an entrance orifice formin seal with the lower edge of the bushing L. Thus the varnish will be excluded from any access to the threads.

What I claim as my invention is:

1. A protector for a hollow member provided with an entrance orifice forming a neck portion, comprising a bushing insertible; in said neck portion, and means for maintaining asealing joint between the.inner' end of said bushing and said neck.

2. A protector for a hollow member having an entrance orifice forming a neck portion, comprising a collapsible bushing insertible within said neck ortion, and means for expanding said bus ing to maintain a liquidseal -between the same and said neck at the inner end thereof.

3. A protector for a hollow member hava neck portion, comprising a liquid-proo sertible within said neck portion, and a I sleeve telescopically engageable with said 1 tlon, comprising a sleeve bushing to expand the same and to maintain a liquid seal with said neck.

4:. A protector for a hollow member having an entrance orifice forming a neck porlongitudinally slitted to be contractible in diameter, a col- 'lapsible resilient bushing surrounding said 30 sleeve and insertible therewith into said neck portion,--and an inner sleeve member telescopically insertible into said slitted sleeve to expand the same and to press said bushing into-sealing contact with said neck.

5. A protector for a hollow member hav-. ing an entrance aperture forming a neck porbushing in proof material and having a head or tion, comprising a collapsible resilient bushmg insertible within sa1d neck portion and 7 having a bead or 'gasket fatthe inner end thereof, and a sleeve telescopically-insertible within said bushing to expand the sameand to force said bead or gasket into sealing contact with said neck. I

6. A protector for a hollow member having an entrance aperture forming-a neck portion, said neck portion being threaded and havin an annular recess 'at the inner end thereo ient bushin insertible within said neck provided wit a bead or gasket at its inner end normally contracted to clear said threads, and a sleeve telescopically insertible within said bushing to expand the same and to force said bead 0r gasket tact with said annular recess.

ing an entrance orifice forming into sealingcon- 7 A protector for a hollow member hava neck por- "comprising a collapsible resiltion, said neck portion being. internally threaded and having an annular recess at the innerend thereof, comprising a protecting member insertible within said neckcomprlsing a longitudinally-slitted sleeve, a bushing surrounding said sleeve ofresilient liquidas at at its inner end normally contractible in diameter to clear said thread, and an innersleeve member telescopically insertible within said slitted sleeve to expand said bushing and to force the head or gasket thereof into sealing contact with said annular recess.

In testimony whereof I aiiix my signature.

CHARLES C. ZABRISKIE. 

